add a bit more padding on the edges

1 files changed, 2 insertions, 2 deletions

diff --git a/x-carriage.scad b/x-carriage.scad
index cffdd1e..1128e64 100644
--- a/x-carriage.scad
+++ b/x-carriage.scad
@@ -40,26 +40,26 @@ module belt(pitch=belt_pitch,width=belt_width,thickness=belt_thickness,tooth=bel
     rotate([-90,0,0])
     cylinder(r=tooth+tolerance,h=width,$fn=6);
   }
   translate([0,-1,0])
   cube(size=[l,width+2,thickness+tooth+1]);
  }
 }
 
 module xcarriage() {
  cw = bearings_l+2*bearings_m;	// carriage width
  % for(mz=[0,1]) mirror([0,0,mz]) translate([0,0,-belts_apart/2]) belt();
  difference() {
-  translate([-cw/2,-belt_width/2,-rods_apart/2-bearings_d/2])
-  cube(size=[cw,bearings_d/2+bearings_s+belt_width/2,rods_apart+bearings_d]);
+  translate([-cw/2,-belt_width/2,-(rods_apart+bearings_d+bearings_m)/2])
+  cube(size=[cw,bearings_d/2+bearings_s+belt_width/2,rods_apart+bearings_d+bearings_m]);
 
   for(sz=[-1,1]) translate([0,0,sz*rods_apart/2]) {
    rotate([0,90,0])
    cylinder(d=bearings_d,bearings_l,center=true,$fn=60);
    for(sx=[-1,1]) translate([sx*bearings_l/4,0,0])
     rotate([0,90,0]) difference() {
      cylinder(d=tiehole_od,h=tiehole_w,center=true,$fn=60);
      cylinder(d=tiehole_id,h=tiehole_w+2,center=true,$fn=60);
     }
    rotate([0,90,0]) cylinder(d=bearings_d-bearings_m,h=cw+2,center=true,$fn=60);
    translate([-cw/2-1,-belt_width,-(bearings_d-bearings_m)/2]) cube(size=[cw+2,belt_width,bearings_d-bearings_m]);
   }